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杨属派间核型比较研究     被引量:6

A comparative study on the karyotypes among sections of Populus

文献类型:期刊文献

中文题名:杨属派间核型比较研究

英文题名:A comparative study on the karyotypes among sections of Populus

作者:陈成彬[1] 张守攻[2] 李秀兰[1] 韩素英[2] 宋文芹[1] 齐力旺[2]

第一作者:陈成彬

机构:[1]南开大学生命科学学院;[2]中国林科院林业研究所细胞生物学实验室

年份:2005

卷号:25

期号:4

起止页码:338-340

中文期刊名:广西植物

外文期刊名:Guihaia

收录:CSTPCD;;北大核心:【北大核心2004】;CSCD:【CSCD2011_2012】;

基金:国家"973"项目"树木育种的分子基础研究"(G19990160);国家林业局"948"项目"国外白杨和胡杨新品种及抗干旱基因与转化技术引进"(9840402);山西省自然科学基金项目资助

语种:中文

中文关键词:白杨派;青杨派;大叶杨派;胡杨派;黑杨派;核型比较

外文关键词:Populus; Tacamahaca ; Leucoides; Turanga ; Aigeiros ; karyotype comparison

分类号:Q943

摘要:对杨属五派代表种的核型进行了分析,各代表种核型公式如下:欧洲山杨(白杨派)2n=2x=38=21m(2SAT)+4sm+13st(1SAT);小叶杨(青杨派)2n=2x=38=1M+26m(1SAT)+8sm(1SAT)+1st+2t(1SAT);大叶杨(大叶杨派)2n=2x=38=2M+22m+8sm+6st;胡杨(胡杨派)2n=2x=38=2M+23m+3sm+10st(2SAT);箭杆杨(黑杨派)2n=2x=38=3M+29m(2SAT)+5sm+1st。杨属派间核型差异主要表现在中部与次中部着丝点(M,m)和近端部与端部着丝点(st,t)染色体数目上。白杨派和胡杨派具较多的st、t染色体,核型不对称系数比其它派高。按Stebbins理论白杨派和胡杨派属进化类型。
This paper analyzed the karyotypes of 5 sections of Populus. The karyotype formula were as follows. P. tremula L. 2n=2x=38=21m(2SAT)+4sm-b13st(1SAT);P. simonii Cart. 2n=2x=38=1M+26m(1 SAT)=8sm(1SAT) + 1st+2t(1SAT) ; P. lasiocarpa Oliv. 2n=2x= 38= 2M+22m+ 8sm+6st; P. euph-ratica Oily 2n=2x=38=2M+23m+3sm+ 10st(2SAT);P. nigra L. var. thevestina(Dode)Bean 2n=2x=38=3M+29m(2SAT)+5sm+1st. The results of karyotype analysis showed that the karyotype differences among sections of Populus were mainly in the change of chromosome number of M and m, st and t. Populus and Turanga had more st and t chromosomes and their Asymmetry index was higher than Aigeiros, Tacamahaca and Leucoides. According to the Stebbins's theory, Populus and Turanga were the evolutional type.

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